diff --git a/src/ZeroLog/ZeroLog.csproj b/src/ZeroLog/ZeroLog.csproj
index a1e3600..d8f9e00 100644
--- a/src/ZeroLog/ZeroLog.csproj
+++ b/src/ZeroLog/ZeroLog.csproj
@@ -19,7 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Backport.System.Threading.Lock" Version="3.0.1">
+    <PackageReference Include="Backport.System.Threading.Lock" Version="3.0.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>analyzers</IncludeAssets>
     </PackageReference>